Add ycm-cmake-modules recipe

[traversaro]

ycm-cmake-modules is a collection of CMake modules, similar to ECM but developed in the context of robotics software, so it contains several CMake modules that are then used in YARP or similar robotics software.

The repo is still called ycm, but that name is quite ambigous, so the name used for debian packaging is ycm-cmake-modules (see https://repology.org/project/ycm-cmake-modules/versions), so for consistency it is convenient to use the same name also in conda-forge .

Checklist

• Title of this PR is meaningful: e.g. "Adding my_nifty_package", not "updated meta.yaml".
• License file is packaged (see here for an example).
• Source is from official source.
• Package does not vendor other packages. (If a package uses the source of another package, they should be separate packages or the licenses of all packages need to be packaged).
• If static libraries are linked in, the license of the static library is packaged.
• Build number is 0.
• A tarball (url) rather than a repo (e.g. git_url) is used in your recipe (see here for more details).
• GitHub users listed in the maintainer section have posted a comment confirming they are willing to be listed there.
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[conda-forge-linter]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipes/ycm-cmake-modules) and found it was in an excellent condition.

[traversaro]

This is a pure CMake package, but I guess it is still relevant for @conda-forge/help-c-cpp . The recipe is ready for review.

[traversaro]

Thanks @chrisburr!